NL7311066A - - Google Patents

Info

Publication number
NL7311066A
NL7311066A NL7311066A NL7311066A NL7311066A NL 7311066 A NL7311066 A NL 7311066A NL 7311066 A NL7311066 A NL 7311066A NL 7311066 A NL7311066 A NL 7311066A NL 7311066 A NL7311066 A NL 7311066A
Authority
NL
Netherlands
Application number
NL7311066A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of NL7311066A publication Critical patent/NL7311066A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
NL7311066A 1972-10-16 1973-08-10 NL7311066A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA153,991A CA976675A (en) 1972-10-16 1972-10-16 Dual tone receiver

Publications (1)

Publication Number Publication Date
NL7311066A true NL7311066A (enrdf_load_stackoverflow) 1974-04-18

Family

ID=4094689

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7311066A NL7311066A (enrdf_load_stackoverflow) 1972-10-16 1973-08-10

Country Status (9)

Country Link
US (1) US3795775A (enrdf_load_stackoverflow)
JP (1) JPS4974809A (enrdf_load_stackoverflow)
AU (1) AU5662273A (enrdf_load_stackoverflow)
BE (1) BE805227A (enrdf_load_stackoverflow)
CA (1) CA976675A (enrdf_load_stackoverflow)
DE (1) DE2348056A1 (enrdf_load_stackoverflow)
FR (1) FR2203248A1 (enrdf_load_stackoverflow)
IT (1) IT993965B (enrdf_load_stackoverflow)
NL (1) NL7311066A (enrdf_load_stackoverflow)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914557A (en) * 1973-04-11 1975-10-21 Bell Telephone Labor Inc Multifrequency tone detecting arrangement
US3930127A (en) * 1974-01-18 1975-12-30 Baldwin Electronics Inc Tone detector
JPS5543677B2 (enrdf_load_stackoverflow) * 1974-05-15 1980-11-07
JPS50151406A (enrdf_load_stackoverflow) * 1974-05-25 1975-12-05
US3971899A (en) * 1975-04-18 1976-07-27 Mcintosh Alexander C Signalling device for key telephone systems
JPS5234608A (en) * 1975-08-01 1977-03-16 Nec Corp Multifrequency signal receiving system
JPS5234607A (en) * 1975-08-01 1977-03-16 Nec Corp Multifrequency signal receiving system
JPS5242308A (en) * 1975-10-01 1977-04-01 Iwatsu Electric Co Ltd Multiplex frequency signal receiver
JPS6019283U (ja) * 1976-03-03 1985-02-09 ノ−ザン・テレコム・リミテツド 多重周波数信号受信器
CA1031086A (en) * 1976-03-03 1978-05-09 Northern Electric Company Method and apparatus for translating multiple frequency signalling
US4028501A (en) * 1976-03-04 1977-06-07 Northern Electric Company Limited Method and apparatus for translating multiple frequency signalling
US4042790A (en) * 1976-05-17 1977-08-16 Stromberg-Carlson Corporation Voice guard circuit for a tone receiver
US4386239A (en) * 1980-06-17 1983-05-31 Bell Telephone Laboratories, Incorporated Multifrequency tone detector
JPH03132291A (ja) * 1989-10-18 1991-06-05 Fujitsu Ltd Ｐｂ信号検出方式
FR3134367B1 (fr) 2022-04-08 2024-02-23 Psa Automobiles Sa Dispositif de protection du chargeur de batteries pour véhicules électriques et hybrides

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3582562A (en) * 1969-05-07 1971-06-01 Itt Key telephone intercommunication system
JPS5138484B1 (enrdf_load_stackoverflow) * 1970-07-03 1976-10-22
US3710031A (en) * 1970-12-23 1973-01-09 Itt Multi frequency receiver

Also Published As

Publication number Publication date
JPS4974809A (enrdf_load_stackoverflow) 1974-07-19
BE805227A (fr) 1974-01-16
US3795775A (en) 1974-03-05
FR2203248A1 (enrdf_load_stackoverflow) 1974-05-10
DE2348056A1 (de) 1974-04-18
AU5662273A (en) 1974-12-12
CA976675A (en) 1975-10-21
IT993965B (it) 1975-09-30

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